Final answer:
The correct answer is option 2 feet. Trenches near buildings should be at least that distance from the footing for safety and structural integrity, unless otherwise approved.
Step-by-step explanation:
When excavating trenches near a building or structure, it is important to ensure that the trench does not undermine the stability of the building's foundation. As a typical guideline, the trench should be located at least 2 feet away from the bottom exterior edge of the footing unless an alternative distance has been approved by the relevant authority or per the particular construction codes being followed. This spacing helps prevent structural damage and provides a safety margin during construction or maintenance activities that involve digging.
All trenches deeper than the footing of a building or structure, and paralleling the same, should be located not less than 2 feet from the bottom exterior edge of the footing or as approved.
This requirement ensures that the trenches do not undermine the stability of the footing, providing a safe distance between the two. It allows for proper drainage and prevents soil movement from impacting the structure.